SYMPTOMS

The error "HTTP Error 404 - File or directory not found" appears in the
browser when attempting to access http://yourhost/mewebmail or
http://yourhost/meadmin (even though web mail or web administration
support has been configured for that web site).

CAUSE

This issue may occur if ASP.NET has not been installed/configured
on the server. MailEnable .NET web applications (i.e. web
administration and web mail) require that ASP.NET is installed on the
server.

RESOLUTION

ASP.NET needs to be installed on the server so that IIS understands how to
process ASPX web pages. In some situations, it is possible that the .NET
Framework is installed, however ASP.NET (Script Mappings for processing ASPX
pages) may not have been configured.

To resolve the issue, it is necessary to install/configure ASP.NET for IIS on
the server. There are two configuration changes that need to be made to IIS.

Enable the Web Service Extension (IIS Version 6 and later)

If using IIS 6 or later (i.e. Windows 2003 or later) access the Internet
Service Manage (IIS Management Console) and check that the ASP.NET and ASP Web
Service Extensions are allowed). If these were subsequently enabled,
then test whether web mail and/or web admin function.

Configure ASP.NET Script Maps

If problems are still being experienced, it may be that the ASP.NET script
maps have not been configured under IIS. A procedure for enabling them is
outlined below:

1. Select Start, and then select Run. 2. In the Open text box,
type cmd, and then press ENTER. 3. At the command prompt, type the
following, and then press
ENTER:"%windir%\Microsoft.NET\Framework\version\aspnet_regiis.exe" -i

In this path, version represents the version number of the .NET Framework
that is installed on the server. This placeholder must be
replaced with the actual version number when typing the command.